I'm loving BIAB. It's a great songwriting tool and is tons of fun.

I use real tracks/styles exclusively for best sound and change instruments in the Mixer mode until I get the sound I'm looking for.

I make sure the arrangement is pretty much exact before I render it with Direct Wave and uncheck the box where it asks, MERGE TRACKS. This gives me all the instruments separately! I then click and drag them into my recording program,(mine is REAPER). The creative possibilities are endless.

Hope this helps someone who wants to record their own songs and shape them to you liking.

Cheers.